1 /* Copyright (C) 1986-2018 Free Software Foundation, Inc.
3 This file is part of GDB.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "common/byte-vector.h"
24 struct target_waitstatus;
27 struct return_value_info;
29 /* True if we are debugging run control. */
30 extern unsigned int debug_infrun;
32 /* True if we are debugging displaced stepping. */
33 extern int debug_displaced;
35 /* Nonzero if we want to give control to the user when we're notified
36 of shared library events by the dynamic linker. */
37 extern int stop_on_solib_events;
39 /* True if execution commands resume all threads of all processes by
40 default; otherwise, resume only threads of the current inferior
42 extern int sched_multi;
44 /* When set, stop the 'step' command if we enter a function which has
45 no line number information. The normal behavior is that we step
46 over such function. */
47 extern int step_stop_if_no_debug;
49 /* If set, the inferior should be controlled in non-stop mode. In
50 this mode, each thread is controlled independently. Execution
51 commands apply only to the selected thread by default, and stop
52 events stop only the thread that had the event -- the other threads
53 are kept running freely. */
56 /* When set (default), the target should attempt to disable the
57 operating system's address space randomization feature when
58 starting an inferior. */
59 extern int disable_randomization;
61 /* Returns a unique identifier for the current stop. This can be used
62 to tell whether a command has proceeded the inferior past the
64 extern ULONGEST get_stop_id (void);
66 /* Reverse execution. */
67 enum exec_direction_kind
73 /* The current execution direction. */
74 extern enum exec_direction_kind execution_direction;
76 extern void start_remote (int from_tty);
78 /* Clear out all variables saying what to do when inferior is
79 continued or stepped. First do this, then set the ones you want,
80 then call `proceed'. STEP indicates whether we're preparing for a
81 step/stepi command. */
82 extern void clear_proceed_status (int step);
84 extern void proceed (CORE_ADDR, enum gdb_signal);
86 /* The `resume' routine should only be called in special circumstances.
87 Normally, use `proceed', which handles a lot of bookkeeping. */
88 extern void resume (enum gdb_signal);
90 /* Return a ptid representing the set of threads that we will proceed,
91 in the perspective of the user/frontend. We may actually resume
92 fewer threads at first, e.g., if a thread is stopped at a
93 breakpoint that needs stepping-off, but that should not be visible
94 to the user/frontend, and neither should the frontend/user be
95 allowed to proceed any of the threads that happen to be stopped for
96 internal run control handling, if a previous command wanted them
98 extern ptid_t user_visible_resume_ptid (int step);
100 extern void wait_for_inferior (void);
102 /* Return control to GDB when the inferior stops for real. Print
103 appropriate messages, remove breakpoints, give terminal our modes,
104 and run the stop hook. Returns true if the stop hook proceeded the
105 target, false otherwise. */
106 extern int normal_stop (void);
108 extern void get_last_target_status (ptid_t *ptid,
109 struct target_waitstatus *status);
111 extern void set_last_target_status (ptid_t ptid,
112 struct target_waitstatus status);
114 /* Stop all threads. Only returns after everything is halted. */
115 extern void stop_all_threads (void);
117 extern void prepare_for_detach (void);
119 extern void fetch_inferior_event (void *);
121 extern void init_wait_for_inferior (void);
123 extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
124 struct symtab_and_line ,
127 /* Returns true if we're trying to step past the instruction at
128 ADDRESS in ASPACE. */
129 extern int stepping_past_instruction_at (struct address_space *aspace,
132 /* Returns true if thread whose thread number is THREAD is stepping
133 over a breakpoint. */
134 extern int thread_is_stepping_over_breakpoint (int thread);
136 /* Returns true if we're trying to step past an instruction that
137 triggers a non-steppable watchpoint. */
138 extern int stepping_past_nonsteppable_watchpoint (void);
140 extern void set_step_info (struct frame_info *frame,
141 struct symtab_and_line sal);
143 /* Several print_*_reason helper functions to print why the inferior
144 has stopped to the passed in UIOUT. */
146 /* Signal received, print why the inferior has stopped. */
147 extern void print_signal_received_reason (struct ui_out *uiout,
148 enum gdb_signal siggnal);
150 /* Print why the inferior has stopped. We are done with a
151 step/next/si/ni command, print why the inferior has stopped. */
152 extern void print_end_stepping_range_reason (struct ui_out *uiout);
154 /* The inferior was terminated by a signal, print why it stopped. */
155 extern void print_signal_exited_reason (struct ui_out *uiout,
156 enum gdb_signal siggnal);
158 /* The inferior program is finished, print why it stopped. */
159 extern void print_exited_reason (struct ui_out *uiout, int exitstatus);
161 /* Reverse execution: target ran out of history info, print why the
162 inferior has stopped. */
163 extern void print_no_history_reason (struct ui_out *uiout);
165 /* Print the result of a function at the end of a 'finish' command.
166 RV points at an object representing the captured return value/type
167 and its position in the value history. */
169 extern void print_return_value (struct ui_out *uiout,
170 struct return_value_info *rv);
172 /* Print current location without a level number, if we have changed
173 functions or hit a breakpoint. Print source line if we have one.
174 If the execution command captured a return value, print it. */
176 extern void print_stop_event (struct ui_out *uiout);
178 /* Pretty print the results of target_wait, for debugging purposes. */
180 extern void print_target_wait_results (ptid_t waiton_ptid, ptid_t result_ptid,
181 const struct target_waitstatus *ws);
183 extern int signal_stop_state (int);
185 extern int signal_print_state (int);
187 extern int signal_pass_state (int);
189 extern int signal_stop_update (int, int);
191 extern int signal_print_update (int, int);
193 extern int signal_pass_update (int, int);
195 extern void update_signals_program_target (void);
197 /* Clear the convenience variables associated with the exit of the
198 inferior. Currently, those variables are $_exitcode and
200 extern void clear_exit_convenience_vars (void);
202 /* Dump LEN bytes at BUF in hex to FILE, followed by a newline. */
203 extern void displaced_step_dump_bytes (struct ui_file *file,
204 const gdb_byte *buf, size_t len);
206 extern struct displaced_step_closure *get_displaced_step_closure_by_addr
209 extern void update_observer_mode (void);
211 extern void signal_catch_update (const unsigned int *);
213 /* In some circumstances we allow a command to specify a numeric
214 signal. The idea is to keep these circumstances limited so that
215 users (and scripts) develop portable habits. For comparison,
216 POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
217 numeric signal at all is obsolescent. We are slightly more lenient
218 and allow 1-15 which should match host signal numbers on most
219 systems. Use of symbolic signal names is strongly encouraged. */
220 enum gdb_signal gdb_signal_from_command (int num);
222 /* Enables/disables infrun's async event source in the event loop. */
223 extern void infrun_async (int enable);
225 /* Call infrun's event handler the next time through the event
227 extern void mark_infrun_async_event_handler (void);
229 /* The global queue of threads that need to do a step-over operation
230 to get past e.g., a breakpoint. */
231 extern struct thread_info *step_over_queue_head;
233 /* Remove breakpoints if possible (usually that means, if everything
234 is stopped). On failure, print a message. */
235 extern void maybe_remove_breakpoints (void);
237 /* If a UI was in sync execution mode, and now isn't, restore its
238 prompt (a synchronous execution command has finished, and we're
240 extern void all_uis_check_sync_execution_done (void);
242 /* If a UI was in sync execution mode, and hasn't displayed the prompt
243 yet, re-disable its prompt (a synchronous execution command was
244 started or re-started). */
245 extern void all_uis_on_sync_execution_starting (void);
247 /* Base class for displaced stepping closures (the arch-specific data). */
249 struct displaced_step_closure
251 virtual ~displaced_step_closure () = 0;
254 /* A simple displaced step closure that contains only a byte buffer. */
256 struct buf_displaced_step_closure : displaced_step_closure
258 buf_displaced_step_closure (int buf_size)
262 gdb::byte_vector buf;
265 #endif /* INFRUN_H */